And sign language.
Know a poor woman who is deaf and is going blind. Her service dog is amazing. It watches her intensively the whole time he is with her and he has his harness is on.
Take off his harness, he’s one wild puppy!!!!
Yes.
I have a blind friend. His service dog is all work when he is in harness, and loves to play when he is not.
There is a said tale about the service dogs for the blind. They are retired when it is noticeable that their reflexes and ability to focus have declined. But some do not do well in retirement. Some are depressed when they no longer have the intense work relationship they were trained for and got so use to.